Analysis of a century of solar images from an Indian observatory reveals that different features on the Sun’s chromosphere 1, the layer above the visible photosphere, all show the star’s uneven ...

You're not imaging it. The sun has been rising later in Illinois following the winter solstice. But the days aren't getting shorter. Here's why.

Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars. Scientists call this difference crucial to ...